As requested.
While marking this out I noticed that I was wrong about the bolts. It's a single bolt every 8", for the difference that makes.
Kootk, you will probably have to elaborate on why I couldn't use an equivalent section for nodal bracing.
The plate and beam composite action is part...
SRE, the link you provided states that the 2% rule is only for compressive members, but I think that is still the basis for the beam bracing formula since it still has a .02 factor built int. The welds and bolts typically have plenty of strength, my concern is with the plate itself.
KootK, I...
I work in the crane world and commonly encounter runway girders with long spans. Many times they have deck plate that is attached to the full length of the top flange with stitch welds or bolts at even intervals. There is much debate in my office about how to account for this plate. There is...
theonlynamenottaken is right about the torsion/weak axis bending. See attached for a quick approximation. Note that in the weak axis the eccentricity will cause the additional torsion. The support conditions for analysis depend on what you have. To be conservative for the column, I assume...
Thank you everyone who has responded. I am trying to get someone from a satellite office to go to the facility and pull a joist tag. I've considered the option of back-solving, as suggested by several, however this is one of those jobs where it was sold as "those look OK, we'll just assume...
I am checking an existing building for the addition of new equipment that will be suspended from open web joists. The drawings list a variety of 22H and 24H joists in the different locations. The added equipment will increase the moment in the steel joists beyond the published acceptable value...
Look up RAD gun. They have a mounting fixture that you can attach to something that will allow someone to hold onto it. It your piece is on a work table you could tap the table for the torque resistance.
@boo1, 1 13/16" hole, 2" thick baseplate, 56 baseplates, 8 holes per baseplate. We considered, but not very long. We have a deadline with penalty clause for being late, it would probably be cheaper and faster to by all new plates with the right size holes.
@jayrod, That is exactly my concern. I don't have a design standard for determining the plate washer thickness. The original hole/washer sizes were pulled right out of the Design Guide. The only thing I could quickly think of was using Roark & Young for a circular plate with a "concentrated"...
I have am currently working on a design for columns that have moment resisting baseplates. The original installation was to use post-installed, epoxy anchors. Due to geometric and design constraints, the anchor rods were sized so that they just met the requirements for the loading. However...
BAretired, by this line of reasoning, we can't know anything about the slab at all. I worked construction before I got into engineering and I've seen slabs that were poured 2 inches less than called out. Somebody didn't maintain quality and a plain floor ended up being 6 inches (intended) at...
Thank you, the slab is already existing and we are doing an analysis to determine if it is adequate for the new machinery. Before I got too deep into the calcs I wanted to find out if this would apply.
I have a 10" thick concrete slab on grade that is reinforced with #5 bars 12" c/c, both directions, top & bottom. The slab supports machinery that imposes moments in both directions and in sign (at any given time it may be a positive or negative moment about different axes). For a given load...
